If you're hitting a black screen with RDP connections on Windows 10 Build 1903, then the following workaround submitted by user Charles O might be helpful:
As you might recall installing 1903 (WIN 10) on an older PC with certain chipsets resulted in a black screen while using RDP. Jump got the black screen too (obviously). This is a known issue, discussed by Microsoft as late as July 12th and still awaiting the fix (promised for July-August).
The black screen issue has to do with a new display driver (WDDM) used in 1903. The “fix” forces the old XDDM driver to be used. From what I understand it isn’t just the display adapter that causes the issue with affected chipsets, so putting a new video card in the machine won’t help.
Simple fix! Use GPO to force use of XDDM rather than WDDM. In Group Policy Editor under Remote Desktop Session Host -> Remote Session Environment ... set the policy “Use WDDM graphics display driver for Remote Desktop Connections” to DISABLED.
Worked for me on three machines. No side affects that I see.